A circular ring of Radius a with uniform positive charge density per unit length is located in the Y-Z plane with its center at the origin O. A particle of mass M0 and positive charge Q0 is projected from the point S (av3,0,0) on the positive X axis directly towards O with initial speed v0. Find the smallest (non zero) value of the speed v0 such that the particle does not return to point S?

A circular ring of Radius a with uniform positive charge density per u

1.	A circular ring of Radius a with uniform positive charge density per unit length is located in the Y-Z plane with its center at the origin O. A particle of mass M0 and positive charge Q0 is projected from the point S (av3,0,0) on the positive X axis directly towards O with initial speed v0. Find the smallest (non zero) value of the speed v0 such that the particle does not return to point S?
A.	Q 0 2 M 0 e 0
B.	Q 0 2 M 0 e 0
C.	Q 0 2 M 0 a e 0
D.	Q 0 2 M 0 a e 0
Answer» C. Q 0 2 M 0 a e 0